Finding the Fourth Proportional to 13,130,745.76, 18,120,359.94 and 7,625,474.44
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Solution
The fourth proportional to 13,130,745.76, 18,120,359.94 and 7,625,474.44 is: 10,523,114.54
Step by Step Solution
- Step 1: Write the proportion equation
13,130,745.76 : 18,120,359.94 = 7,625,474.44 : x - Step 2: Convert to fraction form
13,130,745.76/18,120,359.94 = 7,625,474.44/x - Step 3: Cross multiply
13,130,745.76x = 18,120,359.94 × 7,625,474.44 - Step 4: Simplify right side
13,130,745.76x = 138,176,341,566,069.95 - Step 5: Solve for x
x = 138,176,341,566,069.95/13,130,745.76 - Step 6: Final answer
x = 10,523,114.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.